| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 11/03/2004 | CN1174230C Density sensor for monitoring rate of leakage from switchgear case with improved reliability |
| 11/02/2004 | US6813127 Blade tip for puncturing cupro-nickel seal cup |
| 11/02/2004 | US6812713 Internal fault indicator for power electrical devices |
| 11/02/2004 | CA2152700C Contact arrangement for electrical apparatus |
| 10/28/2004 | WO2003058663A8 Control system for electrical switchgear |
| 10/28/2004 | US20040212943 Main switch conveying apparatus for vacuum circuit breaker |
| 10/28/2004 | US20040211757 Gas-insulated switch |
| 10/27/2004 | EP1471553A1 Air circuit breaker |
| 10/27/2004 | CN2651924Y Vacuum loading switches |
| 10/27/2004 | CN2651923Y 真空断路器 Vacuum Circuit Breaker |
| 10/27/2004 | CN1540696A Extrahigh voltage vacuum crcuit beaker |
| 10/27/2004 | CN1173445C Switch gear |
| 10/27/2004 | CN1173379C Switching device |
| 10/27/2004 | CN1173378C Switch device |
| 10/26/2004 | US6809913 Low-voltage circuit breaker comprising a data memory |
| 10/21/2004 | DE10325681B3 Switching device for gas-insulated hybrid switch or V power switch, has breaker unit contained in tubular encapsulation housing extending at an angle to both the vertical and horizontal |
| 10/21/2004 | DE102004015386A1 Dreistellungsschalter Three-position switch |
| 10/21/2004 | DE102004005770A1 Betriebsschaltung und die Betriebsschaltung verwendende Leistungsschaltvorrichtung Operating circuit and the operating circuit switching power device used |
| 10/20/2004 | CN2650320Y Asymmetrical twin coil permanent-magnet mechanism |
| 10/20/2004 | CN2650319Y Driving/rotating changing-pair for longitudinal rotary indoor vacuum circuit breaker |
| 10/20/2004 | CN1538477A 真空开关装置 Vacuum switchgear |
| 10/20/2004 | CN1172342C Electric switch with vacuum cavity and flexible connector |
| 10/20/2004 | CN1172341C Method for switching synchronous with voltage waveform of circuit breaker |
| 10/20/2004 | CN1172340C Multi-stage electric switch with driving mechanism and break module |
| 10/14/2004 | US20040201943 Operation circuit and power switching device employing the operation circuit |
| 10/14/2004 | US20040201285 Apparatus operating an isolation switch in coordination with a circuit breaker |
| 10/13/2004 | EP1466395A2 Armoured station element articulated to the ground |
| 10/13/2004 | EP1466340A1 Control system for electrical switchgear |
| 10/13/2004 | EP1466338A1 Non-linear magnetic field distribution in vacuum interrupter contacts |
| 10/13/2004 | EP1016104B1 Transformer system provided with a decoupling system |
| 10/13/2004 | CN1171365C Part with cooling device of high piezoelectric system |
| 10/13/2004 | CN1171265C Motor servo mechanism for overhead air break electrical power distribution switches |
| 10/13/2004 | CN1171264C High-voltage circuit breaker with high-speed moved moveable contact |
| 10/12/2004 | CA2088546C Gas-blast circuit breaker |
| 10/07/2004 | WO2004086437A1 Vacuum circuit breaker |
| 10/07/2004 | US20040196604 Control system for canceling load unbalance of three-phase circuit |
| 10/06/2004 | CN1535468A Vacuum valve |
| 10/06/2004 | CN1170296C On/off control device and circuit breaker fitted with said device |
| 09/30/2004 | US20040190212 Current sensor supporting structure |
| 09/30/2004 | US20040188388 Low-voltage circuit breaker with an electric arc extinction system |
| 09/30/2004 | DE29724842U1 HV circuit breaker with two drivable switch contact pieces - has drive element for second light arc contact piece attached to insulating nozzle for quenching gas and driven with it as well as being arranged radially inside permanent current contact pieces |
| 09/30/2004 | DE19603081B4 Hochspannungs-Vakuumschalter High-voltage vacuum switch |
| 09/29/2004 | CN2645217Y Long life vacuum extinction chamber |
| 09/29/2004 | CN1532865A Operation circuit and electric power switch device using it |
| 09/29/2004 | CN1169269C Air insulated high voltage copmonent with transport support |
| 09/29/2004 | CN1169176C Electric railway vehicle and electric powering unit in particular for such a vehicle |
| 09/28/2004 | US6797909 High-voltage loadbreak switch with enhanced arc suppression |
| 09/28/2004 | CA2121782C Swivel coupling |
| 09/23/2004 | DE10306539B3 Elektrische Kontaktanordnung The electrical contact assembly |
| 09/23/2004 | DE10214202B4 Elektrische Schaltvorrichtung mit Feststoffisolierung The electrical switching device with solid insulation |
| 09/22/2004 | EP1459343A1 Circuit breakers with integrated current and/or voltage sensors |
| 09/22/2004 | EP1214727B1 Circuit breaker |
| 09/22/2004 | CN2643468Y Static contact apparatus with arcing horn for large-capacity relay |
| 09/22/2004 | CN2643466Y Outdoor high-voltage vacuum circuit breaker with isolation knife |
| 09/22/2004 | CN1530990A Air disconnector |
| 09/22/2004 | CN1530989A Switches |
| 09/21/2004 | US6794596 Electrical circuit interrupting device |
| 09/16/2004 | US20040179318 Switching device |
| 09/16/2004 | US20040179317 Self bouncing arc switch |
| 09/16/2004 | US20040179313 Active arc-supression circuit, system, and method of use |
| 09/16/2004 | DE29825094U1 Vacuum chamber - has elastic padding placed between chamber body and outer insulating resin cover |
| 09/16/2004 | DE10229095B4 Abschirmelektrode Shield |
| 09/16/2004 | DE10218806B4 Gleichstrom-Schnellschalteinrichtung für Bahnstromversorgungen und Verfahren zur Abschaltung von Gleichströmen DC Fast switching device for traction power supply and method for switching off direct currents |
| 09/15/2004 | EP1456862A1 Solder ring for production of vacuum tube and method for the production of such a solder ring and of a vacuum tube |
| 09/15/2004 | CN2641812Y Outdoor inject dropping type fuse |
| 09/15/2004 | CN1167099C Rotation-activated circuit-breaker with leading auxiliary switch |
| 09/15/2004 | CN1167096C Medium-and high-voltage gas-insulated circuit breaker with arc quenching means |
| 09/15/2004 | CN1167093C High-speed current-limiting switch |
| 09/14/2004 | US6791442 Magnetic latching solenoid |
| 09/10/2004 | WO2004077477A1 Linear magnetic drive |
| 09/10/2004 | WO2004077471A2 High-voltage loadbreak switch with enhanced arc suppression |
| 09/10/2004 | WO2004077470A2 A self-fixturing system for a vacuum interrupter |
| 09/10/2004 | WO2004077469A2 Axial magnetic field vacuum fault interrupter |
| 09/09/2004 | US20040173576 Arc extinguishing device with a high speed whip |
| 09/09/2004 | DE10308573A1 Electrical switch for handling medium and high voltages, has tubular insulating housing with fins on the outside, containing armatures facing each other with fixed and movable contact pieces |
| 09/08/2004 | EP1454332A1 Method for predicting a future voltage and/or current curve |
| 09/08/2004 | CN2640018Y Indoor high-tension vacuum circuit breaker |
| 09/08/2004 | CN1166040C Power switch installation with disconnecting functions |
| 09/08/2004 | CN1165933C Power switch |
| 09/08/2004 | CN1165932C Circuit breaker |
| 09/08/2004 | CN1165931C Mixed circuit switch |
| 09/08/2004 | CN1165921C Drive assembly with calibrating equipment and electric switch equipment with the same assembly |
| 09/07/2004 | US6788172 Device for controlling the closing of a power circuit breaker |
| 09/07/2004 | US6787725 Switching mechanism of circuit breaker for gas insulted switchgear |
| 09/02/2004 | US20040169014 High-voltage loadbreak switch with enhanced arc suppression |
| 09/02/2004 | DE10309697B3 Magnetischer Linearantrieb Magnetic linear drive |
| 09/01/2004 | EP1453164A1 Switch gear and multi-layer switch gear |
| 09/01/2004 | EP0929905B1 Encapsulated vacuum interrupter and method of making same |
| 09/01/2004 | CN2638222Y 户外高压真空断路器 Outdoor high voltage vacuum circuit breaker |
| 09/01/2004 | CN1525511A Construction unit for accepting absorbers |
| 08/26/2004 | WO2004073007A1 Electric contact arrangement |
| 08/26/2004 | WO2004073004A2 High voltage operating rod sensor and method of making the same |
| 08/26/2004 | US20040164828 Electromagnet and actuating mechanism for switch device, using thereof |
| 08/26/2004 | US20040164053 Method for increasing insulation level in an encapsulation |
| 08/26/2004 | US20040164052 Self-fixturing system for a vacuum interrupter |
| 08/26/2004 | US20040164051 Axial magnetic field vacuum fault interrupter |
| 08/25/2004 | EP1450458A1 Absorbing-element assembly for Switchgear |
| 08/25/2004 | CN2636398Y 630 A rated current ac contactor |
| 08/25/2004 | CN1524278A Electrical cutoff and sectioning equipment comprising a vacuum bulb |
| 08/25/2004 | CN1163934C Switching device with low-voltage auxiliary release |